CN101121176B - Method for harnessing chemical production thiamine crystallization tank region local geological foundation pollution - Google Patents
Method for harnessing chemical production thiamine crystallization tank region local geological foundation pollution Download PDFInfo
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- CN101121176B CN101121176B CN2006100299894A CN200610029989A CN101121176B CN 101121176 B CN101121176 B CN 101121176B CN 2006100299894 A CN2006100299894 A CN 2006100299894A CN 200610029989 A CN200610029989 A CN 200610029989A CN 101121176 B CN101121176 B CN 101121176B
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Abstract
A harness method for chemically produced thiamin crystallization tank area local geographical base pollution is realized in the following steps: people confirm the treating range and dig deep ditches on the periphery; the building depth is a little greater than the separation wall of the acidification impact depth; drilling holes are arranged in a cinquefoil shape with a hole pitch no less than 1.5 m in the partition area mentioned above and the hole array is arranged into a regular combined well array with one list of grouting well pipes and the other list of pumping well pipe; every four lists of holes is used as grouting and draining unit; the grouting well is infused with treating liquid, the major component of which is Ba(OH)2, macromolecule flocculating agent and water treatment accelerant to form BaSO4 sediment in the soil which is acid and alkali resistant, and hyperbaric; in addition, the sediment can absorb harmful radiations and protect the environment in a way.
Description
Technical field
The present invention relates to the improvement of the local geological foundation pollution that a kind of Production in Chemical Plant causes, refer in particular to a kind of improvement method the local geological foundation pollution in Chemical Manufacture thiamines crystallization tank zone.
Background technology
Thiamines zone in large-scale iron and steel enterprise, perhaps the impurity such as SO2 that produce when coke-stove gas is made with extra care of some coking enterprise are converted into ammonium sulfate by a series of procedures.Owing to the multiple reason on process environments and the equipment, cause the long-term erosion of ammonium sulfate to this zone soil property; Simultaneously, because a large amount of corrosive liquids materials that use in this zone production process, these corrosion materials, reasons such as gaping of joints owing to storage tank inclination, wastewater collection storage tank and ground, very easily cause Equipment Foundations bottom ground and peripheral soil property to be subjected in various degree pollution, this phenomenon is particularly serious to the above-mentioned pollution that such process equipment that is built on the weak soil quality base causes.According to the investigation of the applicant to such pollution effect of somewhere, East China, three investigation from 1997 to 2005 show: not only the phreatic pH value in this process equipment place regional area is highly acid, and the overlay area of whole process equipment, because the existence of amine radical ion, not only distributing strong penetrating odor, soil at local space is soft and moulds to the stream plastic state, in the basis-2.0m ~-the 8m depth bounds in the bulk density of foundation soil descend, bearing capacity reduces greatly.As not carrying out engineering reinforcement, jeopardize device security most probably.
Since what years, for the problems referred to above that occur, general processing method is to stop production, and changes foundation soil.Be about to these ground grounds that polluted by acidifying and carry out basic clearly backfill.Obviously this is not a good plan for industrial continuous production enterprise.
Therefore, how to administer the local geological foundation pollution in thiamines crystallization tank zone scientifically and rationally, both guaranteed the ordinary production of manufacturing enterprise, can administer pollution, underpinning effectively again simultaneously, this just becomes a big problem of earnestly wishing solution in the industry.
Summary of the invention
Purpose of the present invention: be intended to propose occur in the local geological foundation in thiamines crystallization tank zone in a kind of scientific and reasonable improvement chemical enterprise, pollute the zonule that forms because of acidifying and pollute suddenly, and pollute the engineering stability disaster of initiation by this.Reach the excavation that neither need stop production, influence ordinary production, can administer acidifying simultaneously again effectively and pollute the purpose on ruggedized equipment basis.
This improvement method to the local geological foundation pollution in Chemical Manufacture thiamines crystallization tank zone, it is realized by the following steps method:
A, affirmation process range, and at its peripheral edge excavation zanjon, construct the degree of depth and be slightly larger than the divider wall that acidifying influences the degree of depth;
B, arrange with the pitch-row that is not less than 1.5m in the above-mentioned spacer territory that impales and be the quincunx boring of controlling, and this Kong Zhen is arranged to one classifies the grouting well casing as that another classifies the regular combined type well battle array of the well casing that draws water as; And with per four row holes be in the milk, the operation unit of draining;
C, in grout wells, inject with Ba (OH)
2Be main treatment fluid and high polymer coagulant, water treatment promoter, in soil, form acid and alkali-resistance, high specific gravity, can absorb harm ray to have the BaSO of certain environment-friendly function
4Precipitation.
Described treatment fluid is by water and Ba (OH)
4Formulated by 100: 5 weight portions.
Described high polymer coagulant is formulated by 100: 0.05 weight portion by water and APA, NPA, CPA and polyquaternium etc.
Described promoter is formulated by 100: 0.1 weight portion by water and poly-aluminium, amphiprotic polyacrylamide.
According to this improvement method that above technical scheme proposes, utilize in the chemistry and the principle of displacement reaction, by in soil, adding with Ba (OH) to the regional local geological foundation pollution of Chemical Manufacture thiamines crystallization tank
2Be main alkaline agent, make former tax be stored in harmful anion SO in the soil
4 2-Generate BaSO
4Precipitation makes sulfate radical and ammonia radical ion in the soil all reach the content standard scope, thereby solves degradation problem under the small environment pollution that caused by the local geological foundation pollution in thiamines crystallization tank zone and the engineering bearing capacity.
Description of drawings
Accompanying drawing 1 is each operation unit hole layout drawing of sulphur crystalline ammonium groove district;
Accompanying drawing 2 is the comprehensive slurries pumping construction profile of neutralization;
Accompanying drawing 3 is each operation unit circulatory system installation diagram of sulphur crystalline ammonium groove district.
Among the figure 1, boring 4, mouth spray 5, drill bit 11, grouting well casing 12, the well casing A that draws water, chemical grout pumps into equipment B, vavuum pump pumping equipment
The specific embodiment
This improvement method that the inventor proposes to the local geological foundation pollution in Chemical Manufacture thiamines crystallization tank zone, it is realized by the following steps method:
A, affirmation process range, and at its peripheral edge excavation zanjon, construct the degree of depth and be slightly larger than the divider wall that acidifying influences the degree of depth;
B, arrange with the pitch-row that is not less than 1.5m in the above-mentioned spacer territory that impales and be the quincunx boring of controlling, and this Kong Zhen is arranged to one classifies the grouting well casing as that another classifies the regular combined type well battle array of the well casing that draws water as; And with per four row holes be in the milk, the operation unit of draining;
C, in grout wells, inject with Ba (OH)
2Be main treatment fluid and high polymer coagulant, water treatment promoter, in soil, form acid and alkali-resistance, high specific gravity, can absorb harm ray to have the BaSO of certain environment-friendly function
4Precipitation.
Described treatment fluid is by water and Ba (OH)
4Formulated by 100: 5 weight portions.
Described high polymer coagulant is formulated by 100: 0.05 weight portion by water and APA, NPA, CPA and polyquaternium etc.
Described promoter is formulated by 100: 0.1 weight portion by water and poly-aluminium, amphiprotic polyacrylamide.
This comprehensive treatment scheme is thought in the theory analysis: if whole governance process is carried out in an airtight container, be feasible and effective.Therefore, before sulphur ammonium areal geology is improved, carried out regional sealing and handled, and the sealing degree of depth is greater than the contaminated geologic degree of depth.
And in the underground space, it is not in-problem that precipitation reaction and ion-exchange reactions take place, and can key be form a loop, and the slightly acidic solution that the reaction back generates is collected from soil.The method of carrying out the solution circulation for this class in soil in the certain area coverage did not have precedent at home as yet, we are before formally carrying out the comprehensive regulation to chemical company's sulphur ammonium zone soil property for this reason, carried out the one-off pattern draft experiment earlier, determined on the basis of not destroying the soil internal structure, to form the circulatory system of a low speed, to reach optimum efficiency.
Geology is improved reacting hole boring and is taked the method for impact holing or vibration to creep into.When in miscellaneous fill, creeping into, if the hole wall shakiness then is lowered to the conduit retaining wall; When creeping into mud or muck soil and powder, fine sand, be lowered to the conduit retaining wall, until-the 9m soil layer.Cloth hole principle is the about 1.5m of same column pitch of holes; The about 1.5m of the column pitch in hole becomes quincunx cloth hole.Plan is with Kong Weiyi operation unit of per four row, and two row pour into chemical grouts, and two row drainings also provide to detect and use.Every operation unit is illustrated in fig. 1 shown below: in a word, after improving, this geology utilizes the Ji Li of osmotic grouting in the foundation stabilization, can be injected in the foundation soil with the slurries that the chemical solution of sulfate ion reaction generation indissoluble precipitation is formed by injection slurry, slurries are the mode to permeate under certain low-pressure, overcome ground water pressure, interpore on-way resistance of grogs and the resistance that itself flows, infiltrate natural hole to the soil body, produce precipitation reaction through certain hour and attached to the sulfate on the grogs skeleton, substantially be not subjected to the situation of disturbance and destruction to be issued to the purpose of improvement at soil layer construction, to improve foundation soil, prevent that ground soil property bearing capacity from constantly descending because of the soil deterioration that existing of ammonium sulfate produces.
This chemistry integrated treatment principle:
This comprehensive regulation requires the solubility of reaction product very little based on precipitation reaction.To fulfill this requirement, selecting with the barium salt is that the comprehensive regulation of soil property is carried out in the comprehensive agent of host.
Contain anion SO in the molecule of sulphur ammonium
4 2-, being difficult to be adsorbed by grogs, underground water is many and make SO to the absorption of ammonium ion
4 2-Residual soil, so to acid ground, residual SO
4 2-Will with H
+In conjunction with the pH value that reduces soil, acidified soil.
It is Ba (OH) that the host that is added is handled in this soil improvement
2So the primary product that generates is BaSO
4It is strong that barium sulfate has chemical inertness, good stability, and acid and alkali-resistance, hardness is moderate, and high specific gravity can absorb harm ray, advantages such as the certain environment-friendly function of tool.For the trickle powdery blanc fixe that allows the reaction back produce reacts completely, therefore in comprehensive liquid, add auxiliary agents such as anion efficient flocculant, PAC to increase the completeness of precipitation, improve the quality of underground water and soil.
In this programme soil improve add high polymer coagulant and be: APA, NPA, CPA, polyquaternium flocculant etc.
In this programme soil improve institute add water treatment promoter as: gather aluminium, amphiprotic polyacrylamide etc.
Chemistry integrated treatment formula of liquid: every 100kg water adds 5kgBa (OH)
2Stir, constantly low pressure pours in the underground SO to be detected
4 2-Substantially after reaching the content requirement scope, low-pressure pours into the aqueous solution that contains 0.05kg high polymer coagulant and 0.1kg water treatment promoter in every 100kg water again, all reaches the content standard scope to sulfate radical and ammonia radical ion.
Claims (2)
1. improvement method to the local geological foundation pollution in Chemical Manufacture sulphur crystalline ammonium groove zone, it is realized by the following steps method:
A, affirmation process range, and at its peripheral edge excavation zanjon, construct the degree of depth and be slightly larger than the divider wall that acidifying influences the degree of depth;
B, arrange with the pitch-row that is not less than 1.5m in the divider wall territory that impales and be the quincunx boring of controlling (1), and Kong Zhen is arranged to one classifies grouting well casing (11) as that another classifies the regular combined type well battle array of the well casing that draws water (12) as; And with per four row holes be in the milk, the operation unit of draining;
Ba (OH) injects in C, elder generation in grout wells
2Be main treatment fluid and high polymer coagulant, water treatment promoter, form BaSO in the soil
4Precipitation, described treatment fluid is by water and Ba (OH)
2Formulated by 100: 5 weight portions, described water treatment promoter is formulated by 100: 0.1 weight portion by water and poly-aluminium, amphiprotic polyacrylamide.
2. a kind of improvement method to the local geological foundation pollution in Chemical Manufacture sulphur crystalline ammonium groove zone as claimed in claim 1, it is characterized in that: described high polymer coagulant is formulated by 100: 0.05 weight portion by water and APA, NPA, CPA and polyquaternium.
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| CN2006100299894A CN101121176B (en) | 2006-08-11 | 2006-08-11 | Method for harnessing chemical production thiamine crystallization tank region local geological foundation pollution |
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| CN101121176B true CN101121176B (en) | 2010-09-15 |
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| CN102615098B (en) * | 2012-03-26 | 2013-08-28 | 中南大学 | Method for repairing cadmium-lead composite polluted calcareous soil |
| CN109641247A (en) * | 2016-08-29 | 2019-04-16 | 株式会社竹中工务店 | Underground purification method |
| CN110605296A (en) * | 2018-06-15 | 2019-12-24 | 重庆大学 | In-situ assembled polluted soil leaching and repairing device and construction method thereof |
| CN109661868B (en) * | 2019-01-04 | 2022-03-11 | 杰瑞(莱州)矿山治理有限公司 | Method for ecological restoration in saline-alkali soil |
| CN112502640B (en) * | 2020-11-20 | 2022-09-20 | 贵州大学 | Construction method of high-sulfur coal gangue storage yard continuous alkali production permeable curtain |
| CN112916606A (en) * | 2021-01-23 | 2021-06-08 | 许永全 | Deep neutralization regeneration device suitable for soil remediation with over-standard pH value |
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